I have decent night vision, but switching from dark to light, for me, is very difficult. Because the lights overload me right at first, so adjusting is so hard to do. I usually stare at the edge of the road when a car is oncoming, if there's a white line there, even better. And I always have to "flip" the rear view mirror to make the lights behind me dimmer. It makes sense to me that it's a bit harder for people with SPD, because of the overload factor. It gives you that split second of "deer in the headlights" (almost literally!) when the overload hits first.

On the other side of things, though, since I have the dyspraxia element going on, where I have serious issues being able to walk safely without being able to see at night. So even though I can see in relatively dim areas, I still like to have a night light of some sort on to keep me going. Works well with the two year old that brings night lights with him wherever he goes.